History

Kiyono Momohime was a member of the Tokyo branch of indie idol group Amorecarina until her graduation in 2015. She was also enrolled in the Avex Artist Academy's dance program in Tokyo, under which she was a member of the local idol duo Juri♡Puri during part of 2015, and acted as a junior model for a fashion magazine. The following year on January 15, 2016 she was revealed as a new member of the Hello Pro Kenshuusei through an announcement on the official Hello! Project website. Kiyono's first public introduction took place at the "Hello! Pro Kenshuusei Recital February/March 2016 ~SINGING!~" event on February 13, 2016.

On May 5, 2017 an announcement was made at the end of the "Hello! Project Kenshuusei Happyoukai 2017 ~Haru no Koukai Jitsuryoku Shindan Test~" event revealing that Hello Pro Kenshuusei members Kiyono Momohime and Takase Kurumi would debut in a new section that would focus on theater and performance, with no further information provided at the time. In an article for the release of the Hello Pro Maruwakari BOOK 2017 SUMMER, it was revealed that Takase and Kiyono and another unassigned Kenshuusei had been promoted to full members of Hello! Project, though their official profiles remained within the Hello Pro Kenshuusei section and they continued to participate in Kenshuusei events.

An update to the status of two previously announced new groups was published through the official website on March 30, 2018. The notice revealed that the groups would begin activities between Summer and Autumn 2018 and the new group Takase and Kiyono would become members of would have joint activities with the group Ichioka Reina would lead. New information on their respective concepts was also shared; Takase and Kiyono's group would be formed with the image of a small theater troupe that utlizes expressive power and elements of theater and comedy with their singing and dancing. In addition, new auditions for the groups were also announced with applicant information to be revealed in late April 2018, and a note that members could be chosen from both public applicants and members of Hello Pro Kenshuusei.

Her future goal is to become a performer that can bring happiness to everyone in the world.

Is occasionally referred to as "Momohime-gensui Saiko Shireiken" (モモヒメ元帥最高司令官; Supreme Commander Marshal Momohime) by fans, after a gag role she played while delivering instructions to her seniors for the Hello! Project Hina Fes 2017 lottery.